Radiant heat recovery heater, and stirling engine and combustion furnace using radiant heat recovery heater
AssigneeYanmar Co., Ltd.
InventorJiro Fukudome
Life of this patent
Estimating the term…
Abstract
A radiant heat recovery heater includes U-shaped heat transfer tubes each including a first path and a second path arranged on a mounting section. The U-shaped heat transfer tubes are housed in a container fixed to the mounting section. The first paths and the second paths of the U-shaped heat transfer tubes are arranged on the mounting section at equal intervals with a pitch angle θ. The first paths are each arranged on the mounting section at a position offset from the pitch angle θ for the associated second path by a predetermined angle α, so as not to completely overlap a projection of that second path, the projection extending from the container toward the center C of the container.
Claims20
A radiant heat recovery heater comprising a plurality of heat transfer tubes arranged on a mounting section of the radiant heat recovery heater, the heat transfer tubes each comprising an outward path and a return path for a heat medium, wherein:
- first paths are arranged to form an arrangement pitch circle having a small diameter, and second paths are arranged to form an arrangement pitch circle having a large diameter;
- the heat transfer tubes are housed in a container;
- the heat transfer tubes absorb radiant heat from the container when the container is exposed to high temperature;
- the first paths and the second paths of the heat transfer tubes are arranged on the mounting section at equal intervals with a pitch angle;
- and
- the first paths are each arranged on the mounting section at a position offset from the pitch angle of the associated second path by half the pitch angle, so as not to completely overlap a projection of that second path, the projection extending from the container toward a center of the container.
A radiant heat recovery heater comprising a plurality of heat transfer tubes arranged on a mounting section of the radiant heat recovery heater, the heat transfer tubes each comprising an outward path and a return path for a heat medium, wherein:
- first paths are arranged to form an arrangement pitch circle having a small diameter, and second paths are arranged to form an arrangement pitch circle having a large diameter;
- the heat transfer tubes are housed in a container;
- the heat transfer tubes absorb radiant heat from the container when the container is exposed to high temperature;
- and
- the first paths of the heat transfer tubes arranged to form a pitch circle having a small diameter comprise flatly or elliptically processed parts enlarged along a projection, to increase a projection area extending from the container toward a center of the container.
Dependencies are inferred from the claim text.